HMRC are expecting VAT to be submitted electronically directly from accounts systems. This seems vaguely sensible. It is mandatory from April 2019. It avoids typing mistakes at the very least.
So, we look on HMRC developer web site and see that they list APIs. They list some using RESTful APIs and some XML ones here. The XML ones include submitting VAT returns. Something we have had for some time, and is all "digital" as required. So we were thinking, cool, we did this years ago, not an issue.
But we actually asked them about it, just in case, and they are very confusing. They say the XML API does not "support" making tax digital - which - err - makes no sense, it is digital. They apparently have an API that is not the XML API for the MTD VAT submission but oddly it is not in that list of APIs, so we have to register with them in some way to get the API.
The web site does not say the existing XML API is going away, indeed they confirm it is not, but apparently will not be valid to use for MTD, which makes no sense whatsoever.
Why are HMRC not accepting their own digital XML APIs that they have in existence for submitting VAT digitally? An API they confirm they are not withdrawing? Why have they apparently produced secret new APIs to submit it? It makes no sense.
Thankfully it will be simple enough to do, one way or another, and there is still plenty of time. The recording of VAT and ensuring it is all digital is all covered, thankfully.
Update: We have finally got access to the documentation on the API, it is hidden behinds a login and not published along side all of the other APIs. There is no reason why the API for this should not be published, and even less reason when you consider the other APIs are published. It also makes little sense for a mandatory API to be in a beta state only 6 months before it has to be in use by every accounting package in the country. Thankfully it is very noddy JSON/OAuth. I cannot see anything in VAT notice 700/22 that makes the XML API invalid in anyway. The OAuth, of course makes assumptions, i.e. that someone is authorising a third party to access / submit VAT details, which is not the case here. There seems to be no "journey" (as they describe it) for someone that is submitting VAT returns for themselves using their own software. They also have gems like they want to know the public IP address and port of the web browser that requested filing the VAT return - forgetting that it may not have a public IP address even as it may be on a private network! I just hope it copes with that being an IPv6 address.
Update: WTF? They made us jump through hoops before letting us have access to the API documentation for submitting the VAT return - but their own service standards require that everything they do is published, reusable, open source, and they even have a GitHub page!
Update: I am pretty sure I have now found a newbie error in the HMRC OAUTH stuff (mis escaping form data in a sequence of pages) - we'll see what they say. Worked around.
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